Vaisala HUMICAP HMP155 Guia do Utilizador descarregar pdf (Página 74)

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72 _______________________________________________________________ M210912EN-C

Temperature

Table 17 Temperature Performance

Description Value

Measurement range -80 ... +60 °C (-112 ... +140 ºF)

Accuracy with voltage output

at -80 … +20 °C ±(0.226 - 0.0028 x temperature) °C

at +20 … +60 °C ±(0.055 + 0.0057 x temperature) °C

Accuracy with passive (resistive) output

According to IEC 751 1/3

Class B

±(0.1 + 0.00167 x |temperature|) °C

Accuracy with RS-485 output (see Figure 14 below)

at -80 … +20 °C ±(0.176 - 0.0028 x temperature) °C

at +20 … +60 °C ±(0.07 + 0.0025 x temperature) °C

Temperature sensor(s) Pt 100 RTD Class F 0.1 IEC 60751

Response time (63%) for additional temperature probe in 3 m/s air flow

63% < 20 s

90% < 35 s

0804-032

Figure 14 Accuracy over Temperature Range: Voltage and RS-

485

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 83 84

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